Electric motor.



'PATENTED DEC. 25', 19 0 6.

E. W. MYERS."

ELEGTRIG MOTOR. APPLICATION FILED MAR. 21. 1905.

2 sums-ennui.

2 M 7 W M J W ITN ESSES PATENTED DEC. 25, 1906.

E. W. MYERS [ELECTRIC MOTOR Y APPLIOATIOH FILED IAB 21 2 SHEETS-SHEET 2. I

INVENTDR Q WITNESSES ATTORNEY Bloomfield, in the same uipon line as, Fig. 1,- and UNITED STATES EUGENE W:

PATENT oEEIo ELECTRIC MOTOR. l

Specification of Letters Patent.

application filed March 21, 1905. Serial Il'o. 251,193.

To all whom, it may concern: Be it known that I, EUGENE W. MYERS a cltlzen of the United States, residing at county of Essex and State of New Jersey, have invented certain new and useful Improvements in Electric Motors; and I do hereby declare the followin to be a full, clear, and exact description 0 the invention, such as-will enable othersiskilled in the art to which it appertains to make and use the same, reference being had to the accompany ng drawings, and to characters of thereon, which form a part reference marked of this specification. I

The objects of this invention are to secure an improved field for electric motors, to obtain such a construction of the field as will admit of the use of a chill to thus avoid machine-work upon the fields and lessen the labor and cost of producing them, to obtain maximum efiiciency in tne field and reduce its reluctance, to avoid proj ectingpole-pieces upon the field, to secure a construction in metal facilitates the passageof the lines of force from pole to pole, to obtain the shortest possible path for the lines of force through said field, to split or divide the fieldin such a place as to not interfere with the field strength, to obtain a 'coils can be placed in either series or multiple with each vantages and results, some of which may be hereinafter referred to in connection with the description of the working parts.

The invention consists in the improved electric motor and in the arrangements and combinations of arts of the same, all substantially as will e finally embraced in Referring to the in which like characters 0 reference indicate corresponding parts in each of the several ures', Figure 1 .is a sideelevation of the field of my'improved motor with its parts separated. Fig. 2 is a cross-section of the Fig. 3 is a plan the clauses of the claim.

View 0 the lowersection of 4 is a transverse section of plete, andFig. 5 is a perspective view. of the field-coils. i I

In said drawings, 2 3 indicate the upper .andlower sections, respecti ely, of the field of my improved motor, ada ted to come together at their faces 4 5 and being hollowed or recessed at said faces to receive the armain casting the same,

which. the disposition of motor in which the fieldother, and to obtain other adherein-after set forth, and

accomfpanying drawings, I

the field. Fig. the motor comtoms of said armature-recesses 6. 7 are other recesses 8 9, which hereinafter described. The said reeessesS and 9 have straight side walls, preferably flaring slightly outward, as at 81 and 91 in Fig. 4, and thus each field-section can be are smooth and require finishing.

Each field-section preferably has at the opposite ends of its recess 8 (or 9) for the fieldcoil 0 enings or holes 50, ada tedto ventilate. t e interior chamber and cool; Furthermore, a crack may be left, if desired, where the faces 45 of the two sections come ture-coil for a similar purpose.

At one end of the motor each section is provided 'with a brush 10 or 11, mounted in any ordinary and well-known manner to engage. the commutator. adjacent faces 4 5 of the field-sections form at the opposite ends of the armature spaces 13 for the shaft 1 2, commutator 51, and field-coils 21 22. I

For connecting the two field-sections 2 and 3 the lower one is preferably provided with circular ends 14, which project upward above the face 5 of the section and are slotted, as at 15, to ermit the passage of the shaft 12 in assembling the motor. Said ends .14 are ada ted to fit into recesses 16 in the up er fiel section, and said upper section as outer end disks 17, from the face4 and a apted to lap over at their outer sides the end arts 14 of the lower section just described. 0th said upper and lower'parts 14 and 17 of each pair are a erture?l to. receive atapered bushing 18, w 10h is ad the fie -sections, and which no machine-work in ably the castings. of'my improved field are of ma leable iron, and the upper section 1s/pro vided with lugs or feet 19, projecting beyond age bearings 20 upon the other section. Said l marings are referably inclined or flaring, as shown, and t e lugs 19 are cast in even more flaring position, so that when the sections have been fitted properly together and the bushings 18 inserted the said I struck down onto their seats with a hammer and a stable bearing between the two sections secured.

' Y Patented Dec. 25, 1906.

receive the field-coils,

eep the same together adjacent tothe arma' dpro ecting downward bearings for the armature-shaft. 12. Prefer-' ture 23, as at 7,.respectively. In the bot cast upon a chill, so that its inner surfaces Furthermore, the

tedto be forced intolace toconnect the face4 of the section and adapted to enugsmay be edges of the longitudinal groove or ,face a longitudinall Oil-cups 52 ofany project up through the ends 15 of the lower field-section and are screwed into the bushings 18, thus-serving not only to hold their wicks against the shaft 12, but also to prevent the said bushings 18 from slipping out of place."

The coils 21 22 are preferably employed in my improved motor, t esame being joined at either the top or bottom, as shown in Figs. 4 and 5, and s lit or separated at the opposite side to pass t e shaft 12in assembling. 'I hese coils are bent or formed, as -shown in Flg. 5,

to lie in the recesses 8 and 13,dprovided therefor, as shown in Fig. 4, an it will be observed that b. this construction there are no projecting po epieces, but the poles are located at the centers of the opposite flat sides of the motor. Thus the lines of force passin between said oles pass through the thick body of metaFat the upper and lower field, as at 53 in" Fig. 4, so that their passage is facilitated .and the reluctance of the field reduced. Furthermore, the line of division-of the sections 2 3 of the field lies at the middle of each polepiece where the,

'lines of force are least effective, and thus there is the least loss or interruption of said lines. i

Having thus described the invention, what I claim as new is 1. Afield for electric motors, com rising two sections having faces adapted to 1e flatwisetogether, eachsection having in its said disposed trough like floor of said chamber a chamber, and in the recess disposed in a plane substantially perpendicular to the ace of the section, and

having its side walls flarin outward.

'2. If field for electric motors, com rising two sections having faces adapted to re fiatwise together, each section having in its said face a longitudinally-disposed trough like chamber, and in the floor of longitudinal groove or recess with outwardlyfiaring side walls.

ordinary construction said chamber a I 1 3. In an electric motor, the combination of i an armature and its shaft, a'field comprising sides of said armature, perforated overlappingl icular to the shaft, an

sections on ooposite pro'ections perpen i bushings adapted to be inserted in said oversaid sections avin lappin projections and being in turn perforate to receive the shaft.

4. In an electric motor, the combination of an armature and its shaft, '2. field comprising sections on o posite sides of said armature, aving perforated overlapping projections perpendicular to the shaft, bushings adapted to be inserted in said overlapping projections and being in turn perforated to receive e shaft, and oil-cups extending through one of said projections and through the bushing, transversely of the shaft.

5. In an electric motor, the combination of an armature and its shaft, a field comprising sections on opposite sides of said armature, one of said sections having bearing-surfaces inclined to the plane of division of the sections and the other having malleable lugs adapted to en age-said bearings, and means for joining sai sections together.

6. In an electric motor, the combination of an armature and its shaft, a field composed of opposite sections adapted to he one on each side of said shaft, said sections having one perforated annular projections and the. other section having recesses to receive said projections on the first-mentioned section and perforated annular projections of its own adapted to overlap said first-mentioned proje'ctions, the projections of one section being slotted to permit the passage of the armatureshaft, and bushings adapted to be inserted in said perforated projections upon the shaft.

In testimony that I claim theforegoing I have hereunto set my hand this 11th day of March, 1905. I

said sections EUGENE W. MYERS. 

